Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 27.
  1. Library Resource

    In contemporary times, the worldwide trend of urban expansion has become an inexorable force.

    Articles et Livres
    octobre, 2023
    Afrique, Algérie

    This article engages in a comprehensive examination of the intricate dynamics surrounding urban sprawl and land utilization within the peri-urban regions of significant Algerian municipalities, with a specific focus on the city of Oran. 

    Employing a methodology rooted in social geography, this study deploys a trio of investigative approaches: documentary analysis, spatio-temporal scrutiny of peri-urban domains, and in-situ field investigations to shed light on the intricate intricacies of land ownership dynamics in the context of urban sprawl.

  2. Library Resource
    Web capture_6-12-2023_61814_www.cifor_.org_.jpeg
    Publication évaluée par des pairs
    novembre, 2023
    Sahara occidental, Madagascar, Cameroun

    Ce papier constitue une synthèse des acquis et des handicaps de la restauration des paysages forestiers et régimes fonciers au Cameroun. Il présente par ailleurs les engagements du Cameroun pour ralentir la déforestation et la dégradation de ses écosystèmes forestiers à travers la stratégie nationale de restauration des paysages forestiers, en lien avec les initiatives du Défi de Bonn, de l’AFR100 et de la Grande Muraille Verte.

  3. Library Resource
    Rapports et recherches
    mai, 2023
    Sahara occidental, Afrique occidentale, Sénégal

    Les perturbations climatiques, l’évolution démographique et les sécheresses des dernières décennies, ont contribué à une rupture d’équilibre entre les systèmes de production pastorale et agricole, au détriment des pasteurs. À côté de ce contexte écosystémique, d’autres facteurs viennent aggraver la situation pastorale dans le Sahel, en particulier le rétrécissement de l’espace pastoral, grignoté par l’expansion des terres agricoles.

  4. Library Resource
    Land Degradation and Conflict
    Rapports et recherches
    octobre, 2022
    Soudan, Niger, Jordanie

    Avoiding, reducing and reversing land degradation is essential for the food security of current and future generations, for the conservation of biodiversity and the achievement of climate targets. In the current context of increased competition over land resources, rising food insecurity, and inequalities, combating land degradation is also necessary to prevent and mitigate conflict and mass displacement, which risk to destabilise countries and entire regions.

  5. Library Resource
    Articles et Livres
    décembre, 2020
    Algérie, Soudan, Érythrée, Éthiopie, Soudan du Sud, Cameroun, République centrafricaine, Tchad, Burkina Faso, Mali, Mauritanie, Niger, Nigéria, Sénégal

    Drylands occupy more than 40% of the world’s land area and are home to some two billion people. This includes a disproportionate number of the world’s poorest people, who live in degraded and severely degraded landscapes. The United Nations Convention to Combat Desertification states on its website that 12 million hectares are lost annually to desertification and drought, and that more than 1.5 billion people are directly dependent on land that is being degraded, leading to US$42 billion in lost earnings each year.

  6. Library Resource
    Articles et Livres
    décembre, 2016
    Algérie, Maroc, Tunisie

    States of ecological maturity and temporal trends of drylands in Morocco, Algeria and Tunisia north of 28 N are reported for 1998–2008. The input data were Normalized Difference Vegetation Index databases and corresponding climate fields, at a spatial resolution of 1 km and a temporal resolution of one month. States convey opposing dynamics of human exploitation and ecological succession. They were identified synchronically for the full period by comparing each location to all other locations in the study area under equivalent aridity.

  7. Library Resource
    Articles et Livres
    décembre, 2019
    Soudan, Afrique orientale, Burundi, Éthiopie, Kenya, Rwanda, République-Unie de Tanzanie, Ouganda

    Land Degradation Neutrality is a new way of approaching land degradation that acknowledges that land and land-based ecosystems are affected by global environmental change as well as by local land use practices. Achieving the target of a land degradation neutral world encourages adaptive management during planning, implementation, and monitoring of LDN-related activities and follows the LDN response hierarchy of avoiding, reducing, and reversing land degradation.

  8. Library Resource
    Articles et Livres
    décembre, 2018
    Égypte, Soudan, Kenya, République-Unie de Tanzanie, Afrique australe, Afrique du Sud, Nigéria, Mexique, Brésil, Colombie, Équateur, Pérou, États-Unis d'Amérique, Japon, Philippines, Iran, Népal

    Agriculture influences and shapes the world’s ecosystems, but not always in a positive way. More than 2.5 billion people are globally involved as stewards of land and water ecosystems that constitute the natural resource base for feeding the current and future world population. Yet, conventional agronomic interventions based on ‘hard’ agricultural engineering compromise various eco-services that are required for sustainable agricultural development.

  9. Library Resource

    Volume 9 Issue 6

    Publication évaluée par des pairs
    juin, 2020
    Algérie, Soudan, Érythrée, Éthiopie, Soudan du Sud, Cameroun, République centrafricaine, Tchad, Burkina Faso, Mali, Mauritanie, Niger, Nigéria, Sénégal

    The Re-Greening of the West African Sahel has attracted great interdisciplinary interest since it was originally detected in the mid-2000s. Studies have investigated vegetation patterns at regional scales using a time series of coarse resolution remote sensing analyses. Fewer have attempted to explain the processes behind these patterns at local scales. This research investigates bottom-up processes driving Sahelian greening in the northern Central Plateau of Burkina Faso—a region recognized as a greening hot spot.

  10. Library Resource

    Volume 9 Issue 5

    Publication évaluée par des pairs
    mai, 2020
    Algérie, Soudan, Érythrée, Éthiopie, Soudan du Sud, Cameroun, République centrafricaine, Tchad, Burkina Faso, Mali, Mauritanie, Niger, Nigéria, Sénégal

    Desertification is defined as land degradation occurring in the global drylands. It is one of the global problems targeted under the Sustainable Development Goals (SDG 15). The aim of this article is to review the history of desertification and to evaluate the scientific evidence for desertification spread and severity. First quantitative estimates of the global extent and severity of desertification were dramatic and resulted in the establishment of the UN Convention to Combat Desertification (UNCCD) in 1994. UNCCD’s task is to mitigate the negative impacts of desertification in drylands.

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